Car-brake



170.621.4253. Patented July 7, 1885.

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UNITED STATES PATENT FFlCE.

SlMOh FAIRMAN, OF BALTIMORE, MARYLAND.

oAR-BRAK E.

SSEECIFICATION forming part of Letters Patent No. 321,428, dated July 7,1885.

Application filed January 26, 1885. (No model.)

To all whmn it may concern.-

Be it known that I, SIMON FAIRMAN, a citizen of the United States,residing in Baltimore city, in the State of Maryland, have invented anew and useful Improvement in GauBrakes, of which the following is aspecification.

My invention relates to car-brakes for steamrailways, and is soconstructed as to be automatic in its action, all the cars in a trainbeing under the control of the engineer in charge of the locomotive. Iattain this object by the mechanism illustrated in the accompanyingdrawings, in which Figure l is a side view of certain parts of a carhaving the various parts of my invention displayed in their properplaces; Fig. 2, a side view of one of the truck-sills. Fig. 3 is a faceview of a revolving disk with ratchetteeth and pawls. Fig. 4 is a sideand edge view of a lever with its lower end forked. Fig. 5 is alongitudinal view of a car-axle with cam attached. Fig. 6 is an edgeview of an oscillating arm.

Letter b, Figs. 1 and 2, is one of the trucksills, to which is attachedthe loop (1. This loop is semicircular, the king-bolt being the centerof the circle.

Letter Z, Figs. 3 and 1, is a revolving disk having ratchet-teeth on itsupper face. It also has asheave of small diameter. (indicated by lettera, Fig. 1.) To this sheave is fastened the brake-chain 0.

Fig. 4 is a side and edge view of a lever, which has its fulcrumsecurely fastened to the truck-sill a. As seen in Fig. 1, its upper endis slit-ted, as represented by letter if. The lower end is forked,having a pin in each fork, (indicated by letter a.)

Letter 71, Fig. 5, is a cam, which is attached to the inner axle of thetruck.

Fig. 6 is an oscillating arm, having the kingbolt for its center ofmotion, and is represented by letter 9 in Fig. 1. The pawl c, Fig. 1, ispivoted to the front end of this arm, and its opposite end extends tothe inner axle, and there engages the cam h and receives from it theoscillating motion which gives to the pawl e the same movement, and thepawl engaging the ratchet-teeth of the disk gives it a revolving motionand winds the brake-chain 0 around the sheave n, which gives eifect tothe brakes.

Letter 1), Fig. 1, is a hand-lever having the pin r. This pin is longenough to engage a similar lever attached to the next car, and whenmoved gives to it a turn in the same direction with like effect. Thislever 12 is firmly attached to the actuating-bar is, which is properlyfastened to the bottom of the car. It extends through the entire lengthof the car. To this actuating-bar is also fastened the coupler s at apoint nearly perpendicular over the loop (I, Fig. 1. Its jaws inclosethe upper end of the lever 1', and has free action in the slit it, sothat when the handlever p is moved to the right or left it imparts asimilar movement to the lever i. The pins 2:, impinging on the loop d,press it hard upon the free end of the pa'wls f and e, and disengagethem from the teeth of the disk and allow it to take a reverse movement,which unwinds the chain 0 from the sheave a, and thus relieves thebrakes from operation. The opposite end of the chain 0 is attached tothe usual means used for braking purposes on steam-rail ways, which I donot broadly claim.

It may here be remarked that the free end of pawl 6 stands a littlehigher than that of pawl f, and by the pressure of the loop 03 thereonit is first disengaged from the disk-teeth,while pawl f still holds itsgrip and keeps the disk in its position. When desirable to relievepawlf, a further depression of the hand-lever accomplishes it.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. In a car-brake for steam-railways, the actuating-bar 7r,incombination with the handlever 12 and the coupler s, substantially asand for the purposes set forth.

2. The combination of the coupler s, the forked lever l, and the loop(2, substantially as and for the purposes set forth.

3. The combination of the ratchet-disk Z and its sheave a, theoscillating arm and the cam 71, all substantially as and for thepurposes set forth.

SIMON FAIRMAN.

Witnesses:

R. M. J. HARKER, Isaac N. DIOKSON.

